Reply by helluvawreck

Back when we manufactured cabinets with all of the European hardware we always allowed 1 more millimeter in the length between the sides than what the slide manufacturer specified. We usually tried to use the same slide from order to order so there were no surprises. We had programmable panel saws where we cut all of the parts. We cut the cabinet parts and drawer parts and assembled each and everything usually fit fine. In other words you didn’t fit the drawers to the cabinets. You made a batch of drawers and a batch of cabinets, assemble both , and slid the drawers into the cabinets. One drawer would fit just as good as another. This is obviously slightly different than making one or a few cabinets.

Obviously, if you build really nice furniture you fit each drawer to the case.